Disturbed Sleep Model Study.

This study has been completed.
Information provided by (Responsible Party):
ClinicalTrials.gov Identifier:
First received: February 23, 2007
Last updated: May 31, 2012
Last verified: February 2011
Subjects will be screened within 28 days. Each treatment session will consist of 2 PSG nights, study drug administration and noise model is conducted on second night.

Condition Intervention Phase
Sleep Initiation and Maintenance Disorders
Drug: SB-649868
Drug: Zolpidem
Phase 1

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Pharmacokinetics/Dynamics Study
Intervention Model: Crossover Assignment
Masking: Double-Blind
Primary Purpose: Treatment
Official Title: A Double-blind, Double-dummy, Randomised, Placebo-controlled,Four-way Crossover Study to Investigate the Effect of Single Oral Doses of SB-649868 and of Zolpidem in a Model of Noise Induced Situational Insomnia in Healthy Male Volunteers.

Resource links provided by NLM:

Further study details as provided by GlaxoSmithKline:

Primary Outcome Measures:
  • Total Sleep Time measured overnight across four treatment sessions (4 weeks) [ Time Frame: 4 weeks ]

Secondary Outcome Measures:
  • The effects on daytime cognitive function following dosing across four treatment sessions (4 weeks) [ Time Frame: 4 weeks ]

Enrollment: 52
Study Start Date: January 2007
Intervention Details:
    Drug: SB-649868 Drug: Zolpidem
    Other Name: SB-649868

Ages Eligible for Study:   18 Years to 55 Years
Genders Eligible for Study:   Male
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Body weight =50 kg and BMI within the range 18.5-29.9 kg/m2 inclusive
  • Healthy as judged by responsible physician.
  • No clinically significant abnormality identified on the medical or laboratory evaluation and 12-lead ECG;
  • The subject shows a normal sleep pattern on the basis of the evaluation of both PSG screening nights. Normal sleep will be defined as follows: LPS (Latency to persistence Sleep) <30min., SE (Sleep Efficiency) >85%, apnea/ hypopnea index < 10, periodic leg movements (PLM) with arousal index < 10. The apnea/hypopnea index is defined as "the number of apneas and hyponeas divided by the total sleep time (TST) expressed in hours". PLMI is defined as "the number of periodic leg movements associated with arousals or awakening divided by the total sleep time (TST) expressed in hour".

Exclusion Criteria:

  • A positive result for the pre-study urine drug/ alcohol breath screen.
  • Abuse of alcohol.
  • Subject complains of sleep disturbances and /or is receiving treatment for sleep disorders.
  Contacts and Locations
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Please refer to this study by its ClinicalTrials.gov identifier: NCT00440323

United Kingdom
GSK Investigational Site
Guildford, Surrey, United Kingdom, GU2 7XP
Sponsors and Collaborators
Study Director: GSK Clinical Trials GlaxoSmithKline
  More Information

Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: GlaxoSmithKline
ClinicalTrials.gov Identifier: NCT00440323     History of Changes
Other Study ID Numbers: OXS104094 
Study First Received: February 23, 2007
Last Updated: May 31, 2012
Health Authority: United Kingdom: Medicines and Healthcare Products Regulatory Agency

Keywords provided by GlaxoSmithKline:
Noise induced Situational insomnia,
healthy volunteers

Additional relevant MeSH terms:
Sleep Initiation and Maintenance Disorders
Mental Disorders
Nervous System Diseases
Sleep Disorders, Intrinsic
Sleep Wake Disorders
Central Nervous System Depressants
GABA Agents
GABA Agonists
GABA-A Receptor Agonists
Hypnotics and Sedatives
Molecular Mechanisms of Pharmacological Action
Neurotransmitter Agents
Physiological Effects of Drugs

ClinicalTrials.gov processed this record on May 25, 2016